VIBRATION AND NOISE ANALYSIS OF GALVANISED STEEL DUCTS

In HVAC (Heating, Ventilating & Air Conditioning) systems, ducts are used to deliver and remove air. Most commonly used material for the ducts are galvanized steel. Thin sheets are used for making various shapes of duct and duct accessories. When air flows through it, noise and vibration occurs in ducts. Applying enough load conditions to the structure of ducts become a failure, and thus increase in noise and vibration inside the duct system occurs. The focus of this paper will be on using ANSYS software to study distribution of air in the ducts, and its noise and vibration. Then after the analysis in software the experimental setup of the design is made and the setup is analysed using various instruments and studied about the details of the flow inside the ducts.